Which of the following blocks a receptor and prevents its stimulation?
A) an agonist
B) an antagonist
C) both a and b
D) neither a nor b
B
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Horse latitudes at sea correspond to ____ on land
a. tropical rainforests b. great deserts c. glaciers d. mountain ranges
An ordinary single-cell thunderstorm
A) typically lasts for an hour or less. B) is usually classified as a severe thunderstorm. C) is the least common type of thunderstorm. D) is the most destructive type of thunderstorm. E) none of the above
The stages of the epidemiologic transition are based on
A) causes of death at varying stages of the demographic transition. B) the means through which disease is transmitted spatially. C) non-contagious diseases such as heart disease, obesity, or diabetes. D) new food sources which produced population explosions. E) pandemics like the bubonic plague, influenza, or AIDS.
Compare seamounts and guyots. How do the two features differ?
What will be an ideal response?